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GENE AND PROTEIN SUMMARY

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Gene name

DENND1B

Description

DENN/MADD domain containing 1B

Protein class

Mapped to UniProt SWISS-PROT, Potential transmembrane proteins

Protein evidence

Medium

Entrez gene summary

Clathrin (see MIM 118955)-mediated endocytosis is a major mechanism for internalization of proteins and lipids. Members of the connecdenn family, such as DENND1B, function as guanine nucleotide exchange factors (GEFs) for the early endosomal small GTPase RAB35 (MIM 604199) and bind to clathrin and clathrin adaptor protein-2 (AP2; see MIM 601024). Thus, connecdenns link RAB35 activation with the clathrin machinery (Marat and McPherson, 2010 [PubMed 20154091]).[supplied by OMIM, Nov 2010]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

6 in total
4 with predicted TM region
0 with predicted signal peptide

SUBCELLULAR LOCATION SUMMARY

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Main location(s)

Nucleus, Cytoplasm

Additional location(s)

Plasma membrane 

Staining summary

Staining of nucleus and cytoplasm in all three cell lines, with additional staining of plasma membrane in U-2 OS.

Reliability (Single)

Antibodies in assay

HPA042586
 

NORMAL TISSUE & ORGAN SUMMARY

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Expression summary

Ubiquitous cytoplasmic and membranous expression.

Tissue specificity

Expressed in 75 out of 81 cell types

Reliability (APE)

Very low

Antibodies in assay

HPA042586, HPA045494
 

Organ

No of cell types

Protein expression

CNS (brain) 11
Hematopoietic (blood) 8
Liver and pancreas 5
Digestive (GI-tract) 13
Respiratory (lung) 4
Cardiovascular 1
Female tissues 13
Placenta 2
Male tissues 5
Urinary tract (kidney) 3
Skin and soft tissues 13
Endocrine tissues 3

Level of annotated protein expression





High
Medium
Low
None

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 83% of the cancers

Antibodies in assay

HPA042586, HPA045494
 

Tissue

Cancer staining

Protein
expression of
normal tissue

Breast cancer
 
Carcinoid
 
Cervical cancer
 
 
Colorectal cancer
 
 
Endometrial cancer
 
 
Glioma
 
Head and neck cancer
 
 
Liver cancer
 
 
Lung cancer
 
 
Lymphoma
 
 
 

Tissue

Cancer staining

Protein
expression of
normal tissue

Melanoma
 
Ovarian cancer
 
Pancreatic cancer
 
Prostate cancer
 
Renal cancer
 
Skin cancer
 
Stomach cancer
 
 
Testis cancer
 
Thyroid cancer
 
Urothelial cancer
 

Level of antibody staining





Strong
Moderate
Weak
Negative

CELL LINE SUMMARY

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RNA evidence

Medium
 

Cell line

Cell origin

RNA abundance

IH staining

IF intensity

HPA045494

HPA042586

A-431 Skin Medium
Strong
A-549 Lung Low
CACO-2 Colon Low
HEK 293 Embryonal kidney Medium
HeLa Cervix Medium
Hep-G2 Liver Low
MCF-7 Pleural effusion Low
PC-3 Bone marrow Low
RT-4 Urinary bladder Medium
U-2 OS Bone Medium
Moderate
U-251 MG Brain Low
Weak

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

HPA042586 pAb
HPA045494 pAb